Shredding mechanism.



B; V. EDWARDS.

SHREDDING MECHANISM. APPLICATION mm 020.10. 1912. RENEWED OCT. n, 1915.

1,178,386. Patented Apr. 4,1916.

WITNESSES: JNVENTOR.

& w

a By UNI ED srnrnslreranr BRUCE V. EDWARDS, OFNEWARIK,

Specincation'of Letters Patent.

'Ponnion.

NEW JERSEY, ASSIGNOR T0 rnrnns'on' rnncmannr PAPER company, or rnssnrc, new JERSEY, A

CORPORATION OF NEW JERSEY.

SHREDDING MECHANISM.

Patented Apr. 4, 1916.

' Application filed December 10, 1912, 'Serial No. 735,967. Renewed October 11, 1915. Serial No. 55,352.

- To all ibhom it may concern:

Be it, known that I, BRUCE EDWARDS,

of the' city of Newark, county of Essex,

State of New Jersey, a citizen of the United States, have invented a'new and useful Shredding Mechanism, of which the following is a specification. ,a My invention relates to machines of the kind commonly used for slitting, shredding,

or cutting sheet material such as paper, cardboard, leather, wood, fabrics, and the like, and, more particularly it relatesto that class of machines in which a plurality of rotatable cutting edges is used.

In machines of this 'kind,producing' packing material, shredded products, ribbon and other forms of confetti, and'the mechanism has tothe cuttings.-

like, -it has been found in practice to be a matter of very considerable difficulty to so handle the product-as to prevent its being carried back into the machine, with the re-- sult that the cutters become clogged and the be stopped to disengage The essentials ofmy invention consist in "providing, in a mechanism of this class, and

incombination with opposing and cooperating series of rotatable cutters, novel means,

for automatically removing the product fromithe cutter edges, and guiding it away I-. therefrom.

2 One of. the preferred forl'ns of my inven-' '.tion is shown in the accompanying drawings,fin the form of a machine for slitting "onshreddi'ng paper stock into packing mafterial. It is manifest, however, that my 1n- ,vention may be applied in many forms, and

" that it may be widely varied by the skilled designer. ia l mechanic without -departing' from the essentials thereof, and I desire it to 1 .be'under'stood-that'I. claim itin any and all;

of the'equivalentmechanical forms in which it may be produced. I a

Referring tothe drawings:Figure 1 .represents a' ,view ,insectional, elevation "through a portion of the machine, and Fig.

2 represents a sectional'planitaken'on theline of Fig. 1' looking in the direction indicated by the arrow; Fig.3 represents a side view" of one of the lcutte -fcl afin and 1 product-guiding members":-

Inthe drawing the, numerals 1 and repg y resent, respectively, shafts Iupon which the opposing series'of circular:cutters 3fand 4 are mounted for r tation These shafts are preferably connected together by gearing for coincident rotation, the shafts and their drivlng mechanism being mounteduponthe machlne frame (not shown) in any desired or suitable manner.

The cutters 3 and 4 may be secured to thenrespective actuating shafts in any desired manner; I preferably fasten them by means of the keys 5 and 6, mounted in the keyways 7 and 8 in the shafts and engaging corresponding recesses in the cutters.

series of 'spacing collars 9 and 10 is similarly mounted upon each shaft between the cutters, and each series of cutters is so located with reference to the other as to stand opposite to the space collars of the op- 'rality between the cutters 3 and 4 of each series, and preferably encircling the space dollars 9 and 10. Independent supporting and locating-devices are provided for these,

members, in the rods13'and 14 extending throughout the machine parallel to the shafts '1 and 2, these rods being secured to the machine/frame in any desired manner. Suitably-formed extensions 15 and 16 on the members 11 and 14.

The material to be cut is delivered from above-by and betweenthe conveyer belts 17 and 18,-its path being indicated by the stream. 'of. arrows,between and past the cutters 3 and 4, by which it is slitinto narrow, continuous ribbons ,of 'thedesired width and in length correspondingto the stock. delivered to the machine. At'the points indicated by the numerals 19 and 20 I so form sthe-opposed and adjacent edge portions ofthe members 11 and 12'as tolie-withinthe peripheral edges of the cutters between which..they are mounted, fromthese points the edge portions are carried gradually outwardly. to the points 21 'and22 Wherethey overlap the peripheral edges of the cutters.

As-the material is fed'to the machine and cutfthe product which adheresto the cutting edges of the cutters is carried thereby from the point-indicated by the-numeral 23, thro gh the SpaceSbetWeen-the cutters and and 12 engage the rods 13 members with their associated parts in sec- ,tions of definite length, so that as many of these sections as are desired may be assembled and mounted upon a suitablyformed frame, in conjunction with appropriate driving mechanism.

Having thus described my invention I claim 1. In a machine of the kind described the combination with opposed series of rotatable cutters, alternated and overlapping at the cutting point, of opposed series of nonrotatable cutter wipers, similarly alternated and formed eccentrically to remove adhering matter continuously from the cutting edges of all the cutters.

2. In a machine of the kind described the combination with opposed series of rotatable cutters, alternated and overlapping at the cutting point, of non-rotatable and eccentrically-formed cutter wipers, similarly opposed and alternating, to remove adhering matter from the cutting edges of all the cutters.

3. In a machine of the'kind described the combination with opposed series of rotatable cutters. alternated and overlapping at the cutting point, of non-rotatable eccentrically-formed cutter wipers mounted between each cutter in each series, and simi-' larly opposed and alternated, to remove adhering matter from the cutting edges of all the cutters. I

4.. In a machine of the kind described a I position. I

' 5. In a mac ine of the kind described the.

non-rotatable cutter wiping member adapted to be mounted about a rotatable shaft in a relatively fixed position thereto, with: means to retain said member in said relative combination of opposing series of rotatable cutters, mounted upon shafts common to each series of cutters, with a like series of non-rotatable cutter wiping members mount- 1 ed between each cutter in each series, upon the common shafts whereby said cutters arev driven, and means to retain said wiping members in relatively fixed positions while said shafts are rotating- 7 6. In a machine of the kind described the combination of opposedseries of rotatablecutters, like opposed series of non-rotatable cutter-wiping members arranged to preserve a relatively-fixed position while the gutters revolve, each of the opposed series 'of cutters and cutter-wiping members being.

mounted upon or about the same shaft.

7. In a machine of the class described the combination with the frame, of a rotatable shaft, a cutter and a space collar. mounted upon said shaft, a non-rotatable cutter wiping member'encircling said space collar and having a projecting lug to engage a retaining rod whereby the cutter'wiper' is prevented from rotating and is maintained in a fixed position with relation to the rotating cutter-andspace collar, and the said retaining rod.

8. A cutter wiping member adapted to encircle a retaining shaft, said member having an extension to engage an independent retaining device, and being formed circumferentia-lly as, and for the purpose, specified.

In testimony whereof'I hereunto set my hand this second day of December, 1912, in the presence of two attesting witnesses.

, BRUCE V. EDWARDS.

Witnesses:

HOWARD W. BROWN, MARIE D, SGHENK. 

